Device for the instant testing of water quality



FIG. 1 is a side elevational view of a device for the instant testing of water quality showing my new design, the opposite side elevational view being a mirror image thereof.

FIG. 2 is a right side elevational view of FIG. 1.

FIG. 3 is a left side elevational view of FIG. 1.

FIG. 4 is a top plan view of FIG. 2.

FIG. 5 is a bottom plan view of FIG. 2. 

The ornamental design for a device for the instant testing of water quality, substantially as shown and described. 